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The most common value of Unbiased Geothermal Temperature Gradient (GT) away from tectonic plate boundaries is:
. LaTeX Math Inline body G_T = 0.025 ÷ 0.035 \, \rm °C/m
The difference between Geothermal Temperature Gradient (GradTG) and Unbiased Geothermal Temperature Gradient (GradTGN) is that the former accounts for the effects of the seasonal/daily temperature variations, which are only significant above Neutral Temperature Layer.
See Also
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Geology / Geothermal Temperature Field
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